html,
body {
  height: 100%;
}
#scene {
  position: relative;
  background: url(../img/bg.png) no-repeat 0 0px #1d375f;
  background-size: cover;
  width: 100%;
  height: 50%;
  overflow: hidden;
}
.moon {
  width: 100px;
  height: 100px;
  margin: 0 auto;
  top: 50% !important;
}
